Automatic identification by 'ANTPOT. 13 C' NMR of substituent groups bonded in natural product skeletons - Ferreira, Marcelo J. P; Oliveira, Francimeiry Cavalcante de; Alvarenga, Sandra Aparecida Vestri; Macari, Patricia de Almeida Telles; Rodrigues, Gilberto V.; Emerenciano, Vicente de Paulo (Computers and Chemistry, 2002)